Multiple-spindle automatic lathe



ocr. 4, 1932. w, BERG 1,830,681

MULTIPLE SPINDLE AUTOMATIC LATHE Filed Sept. 4, 1929 Patented Oct. 4,1932 matan arr ai f1' WILHELM.' BERG, OF BELEFELD, GERMANY YMULTIPLE-SPINDLE AUTOMATIC LATI-IE Application led September 4, 1929,Serial No. 390.289, and. in Germany llecemoerlll,v 1928. v

quantity of turnings than was anticipated when such lathes were firstdesigned, and

Y particularly so far as the design of the bed is concerned. In theexisting types of frames for automatic lathes, therefore, insufficientattention is bestowed on the removal of large quantities of turnings.Underneath the tool spindles and the tool carriers, the lathe is stillcumbered with conveying and control members and other structural parts,so that the turnings have no free outlet and become lodged. As theresult, in the case of autoinaticdathes running with a high cuttingspeed, there must always be someone to remove the lodged turnings with ahook, in order to prevent disturbing the work, or breakage of themachine, a state `of things which is unendurable in the long run andnecessarily leads to serious economic losses.

The present invention obviates these drawbacks by leaving the spaceunderneath the work and the tool head free for the accommodation of theturnings. This is achieved by designing the bed of the machine as aframe consisting of a baseplate on the ends of which are erected twostandards. The one standard carries the feed members for the toolcarriers, and the other standard carries the work spindles carrying theworlt. The fourth side of the frame is formed by a beam of known typewhich lies parallel with the baseplate and connects the two standardstogether at the top.

Small multipleespindle automatic lathes are known in which the toolcarrier is mounted in a carrier arm. Although, in this case,

The-tw0 box'shaped Standards Z and e are l set up on the baseplate 7T,which is designed as a trough. The standard CZ accommodates the spindledrum 7c, which carries the tool spindles a. rlhe standard e serves toaccom# modate the feed members for the tool-can rier head c which isalso guided by the'prismatic guides n, through the round guide it, whichis mounted at m and z'. The tool' carriers b are mounted in the slidingtool Vcarrier head c.

V'Vhat l claim'is: Y

l. A multiple-spindle automatic lathe having a base plate, twouprightsof boX-like pattern mounted on said base plate and atop e beamconnecting the said two uprights together, a tool holder located betweensaid uprights, said uprights adapted to Y have mounted thereon themembers for the rotational movement of the work andV for the fort? beamhaving provided thereon guides along c which travels a tool holder.

3. fin automatic'multiple-spindle machine having a Aframe comprising abed provided with a pair of spaced upright columns unccnf nected attheir sides and beam connected ati-3 their tops and within which space areciproeating tool carrier is .located in position to leave a clearVopening below the tool carrier and' from column to column.

4. An automatic multiple-spindle machine havinga frame comprising atrough-shaped bed provided with a pair of spaced upright Vcolumnsunconnected at their sides and beam connected at their tops and withinwhich spacca reciprocating tool carrier is located in position to leavea clear opening below the tool carrier and'froin columnjto column.

5. An automatic inultiple-spindle machine having a frame comprisinga bedprovided with a pair of spaced upright columns iin-l its connected attheir sides and beam connected at their tops and within which space arehaving a frame comprising a trough-,shaped bed provided with a pair ofspaced upright columns unconnected at their sidesand beam connected attheirtops and Within which space a reciprocating tool carrier is locatedin, position to leave a clear opening below the tool carrier and fromcolumn to column, a sliding tool carrier mounted between said columns,work spindles carried by one of said columns, and means carried by theother column kfor reciprocating said sliding tool carrier.

7. An automatic multiple-spindle machine having a frame comprising a bedprovided with a pair of spaced upright columnsun'- connected at theirsides and beam connected at their tops and within which space arecipro-cating tool carrier is located in position to leave a clearopening below. the tool carrier and from column to column, a slidingtoolcarrier mounted between said columns,

`:work spindles carried by one of said columns, means carried by theother column for reciprocating said sliding toolV carrier, andY meanscarried by the beam connection for guiding said sliding tool carrier. y

8. An automatic multiple-spindle machine having a frame comprising atrough-shaped bed lprovided with a pair of spaced upright columnsunconnected at their sides vand beam connected at their tops vand withinwhich space'a reciprocating tool carrier is located in position to leavea clear opening belowthe tool carrier and from column to column, asliding tool carrier mounted between said columns, work spindles carriedby one of said columns, means carried by the other col- ,umn forreciprocating said sliding tool carrier, and means carried by said beamconnection for guiding said tool carrier.

9. An automatic multiple-spindle machine having a frame comprising asupporting bed 'provided adjacent to its opposite ends with a pair ofspaced upright columns unconnected at their sides and beam connected attheir tops, a sliding tool carrier above and free of the bed, a guidecarried by said columns for supporting said sliding tool carrier, meanscarried by one of said columns for reciprocating said tool carrier, andwork spindles carried bythe other column.

10. An automatic Vmi'iltiple-spindle ma.- chine havinga frame comprisinga supporting Vbed provided adjacent to its opposite sides with a pair ofspaced upright columns unconnected at their sides and beam connected attheir tops, a sliding tool carrier above and free of the bed, a guidecarried by said. columns and located nearer the tops than the bottoms ofsaid columns for supporting said sliding tool carrier, means carried byone of said columns for reciprocating said tool carrier, and workspindles carried by the other clumn nearer the top than the bottomthereo l1. In an automatic multiple-spindle machine, the combination ofa bed, a plurality of rotary work spindles, a sliding tool Vcarriersupported above and free of the bed to pro vide an opening thereunderthrough the center of the machine, a pair of spaced upright columnscarried adjacentto the ends of said` bed, means extending from onecolumn to the other and passing through the sliding tool carrier,thereby to permit the reciprocation thereof, and a beam connecting-theupper ends of said columns, Vsaid tool carrier and columns being solocated that the vmaj or opening between the columns from side to sidethereof is below the sliding tool carrier.

- 12. A metal working machine having a frame comprising a bed providedwith a pair of spaced upright columns, beam connected at their tops andunconnected by any frame-V work or frame connection between the twocolumns other than at the base of the columns by the bed and at the topsthereof by the beam, a sliding toolV carrier mounted between saidcolumns, work spindles carried by one of said columns, and means carriedby the other col-v umn for reciprocating said sliding tool carrier.

n testimony whereof he aifixes his signa-

